These monitor earphones deliver the high-quality sound that artists need on stage. Equipped with five Balanced Armature Driver Units, they offer playback formidable enough to clearly discern rises in the balance and rhythm of vocals and musical instruments, plus smooth response for high notes to hear subtle nuance of music performance in precision detail. They also offer the high sound insulation needed for monitors on a live music stage, and a snug fit to the shape of the ear. In addition to sound quality and lighter weight, the magnesium alloy casing offers a high-quality feel.